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2 years ago

A teacher puts two tablets in a glass of water. The teacher

Chemistry

2 answers:

ehidna [41]2 years ago

6 0

This question is incomplete because the options are missing; here are the options:

Which of the following is LESS dense than water?

The spoon

The glass

The tablets

The bubbles

The correct answer to this question is The bubbles

Explanation:

In general, the density of materials and substances affects their buoyancy. This implies in water less dense materials will float and those with higher density will sink. In the situation presented, the only element that is less dense than water are bubbles; this is shown by the movement of the bubbles as these originate in the bottom of the glass of water but they rise to the surface, which shows they are less dense than water.

trapecia [35]2 years ago

5 0

Answer:

the bubbles

Explanation:

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A newspaper story describing the local celebration of Mole Day on October 23 (selected for Avogadro's number, 6.02 X 10^ 23 ) at

stepladder [879]

Answer:

The answer is "670.176 km".

Explanation:

Volume of the occupies of one M & M= 0.5 \ cm^3\\\\

M&M 1 mole $= 6.02 \times 10^{23}\\\\$

Calculating volume of M& M mole $= 0.5 \ cm^3 \times 6.02 \times 10^{23}=3.01 \times 10^{23}\ cm^3\\\\$

Calculating the cube mole $L^3= 3.01 \times 10^{23}\ cm^3\\\\$

$L=6.70176 \times 10^{7}\ cm\\\\$

$=6.70176 \times 10^{7}\ cm \times \frac{1\ m}{100\ cm}\\\\=670176\ m\\\\=670.176 \ km$

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2 years ago

Which inner planet has 2 moons? Question 2 options: Mercury Venus Earth Mars

MaRussiya [10]

Answer:

Mars

Explanation:

neither Mercury nor Venus have any moons at all, Earth has one and Mars has its two small moons

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1 year ago

Convert 100 miles to inches (there are 5280 ft in one mile)

expeople1 [14]

Answer:

Explanation:

100 miles * [ 5280 feet / 1 mile] * 12 inches / 1 foot]

100 * 5280 * 12 inches

6336000 inches in 100 miles

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2 years ago

How many molecules are there in 122 grams of Cu(NO3)2?

ipn [44]

Cu =63.5
2 times N =28.02
6 times O =96
96=63.5=28.02=127.07
122/127.07=.96 molecules

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2 years ago

What is uranium made of? For a keynote (school)

never [62]

Pure uranium is radioactive. It will react with most nonmetallic elements to make compounds. When it comes into contact with air, a thin, black layer of uranium oxide will form on its surface. Uranium-235 is the only naturally occurring isotope that is fissile.

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2 years ago